Probably because it's clearly not going to be useful for the 'Police shoot innocent black people!' crowd, given that - despite the relatives and bystanders queueing up to tell their tales of how he was a good bloke really, never in any trouble, rescued kittens from tree in his spare time etc - his FaceBook pictures told a somewhat different tale.
That's not stopped some people from using his untimely (but likely to prove perfectly justified) death as a reason to get what they want:
Inspector Gadget supports the immediate routine arming of all UK police officers.Really?
So, specially-trained and equipped firearms team conducts successful operation = every bobby on the beat should carry a Glock?
No, sorry. Not convincing. Not even to your own colleagues.